From patchwork Tue Sep 19 05:06:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 724674 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 157B0CD3437 for ; Tue, 19 Sep 2023 05:07:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229960AbjISFHj (ORCPT ); Tue, 19 Sep 2023 01:07:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229690AbjISFHi (ORCPT ); Tue, 19 Sep 2023 01:07:38 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBB57FD for ; Mon, 18 Sep 2023 22:07:31 -0700 (PDT) Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.54]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4RqV1k1PJtzMlKC; Tue, 19 Sep 2023 13:03:54 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 19 Sep 2023 13:07:27 +0800 From: Jinjie Ruan To: , Ping-Ke Shih , Kalle Valo , Stanislaw Gruszka , Brian Norris , Yan-Hsuan Chuang CC: Subject: [PATCH v2] rtw88: debug: Fix the NULL vs IS_ERR() bug for debugfs_create_file() Date: Tue, 19 Sep 2023 13:06:50 +0800 Message-ID: <20230919050651.962694-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Since debugfs_create_file() return ERR_PTR and never return NULL, so use IS_ERR() to check it instead of checking NULL. Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver") Signed-off-by: Jinjie Ruan Acked-by: Ping-Ke Shih --- v2: - Fix typo "Fix Fix" in subject. - Add Acked-by. --- drivers/net/wireless/realtek/rtw88/debug.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c index f8ba133baff0..35bc37a3c469 100644 --- a/drivers/net/wireless/realtek/rtw88/debug.c +++ b/drivers/net/wireless/realtek/rtw88/debug.c @@ -1233,9 +1233,9 @@ static struct rtw_debugfs_priv rtw_debug_priv_dm_cap = { #define rtw_debugfs_add_core(name, mode, fopname, parent) \ do { \ rtw_debug_priv_ ##name.rtwdev = rtwdev; \ - if (!debugfs_create_file(#name, mode, \ + if (IS_ERR(debugfs_create_file(#name, mode, \ parent, &rtw_debug_priv_ ##name,\ - &file_ops_ ##fopname)) \ + &file_ops_ ##fopname))) \ pr_debug("Unable to initialize debugfs:%s\n", \ #name); \ } while (0)